ratiocinative

Since this nature is rational and spiritual, reason is understood to be both ratiocinative and contemplative, but contemplation is the most sublime function of the soul.

Stafford's over-arching description for this transition is the change from a visual to a verbal culture, from one based on the instructive power of sensations to one rooted in the ratiocinative skills of language.

Modern detective fiction is usually traced back to Edgar Allan Poe's trilogy of short stories about C. Auguste Dupin, the archetypal ratiocinative sleuth, starting with The Murders in the Rue Morgue.